See various flows, the divergence and rotation of the field depend on the flow.
| System | Description |
|---|---|
| rot | Rotational field. div=0, rot!=0 |
| linear | Linear flow. div=rot=0 |
| differential | Sheer flow. div=0, rot!=0 |
| divergence | Divergence flow. div!=0, rot=0 |
| SAKURAI, Masashi: | E-mail : m.sakurai@cmt.phys.kyushu-u.ac.jp Web page : http://www.cmt.phys.kyushu-u.ac.jp/~M.Sakurai/ |